Shock-absorber for vehicles.



arse AVAILABLE COPY nm ran snares ea'rawr caries.

CHARLES G. POLLEYS, OF KALDIEN, MASSACHUSETTS, ASSIGNOR OF ONE-BALI T F. C. TAFT, OF UXBBIDGE, MASSACHUSETTS.

SHOCK-ABSORBER. m. VEHICLES.

Specification L Patented 27,1910.

Application filed April 6, 1910. Serial No. 553,681.

will enable others skilled in the art to which it appertains to make and usethe same, reference being bad to the accompanying drawings, and to the letters and figures of reference marked thereon, which form a part of ihis specification.

This invention relates to new and useful improvements in' means for taking up vibraiion upon vehicles of various kinds without the use of cushion or pneumatic tires and comprises various details of construction and combinations and arrangements of parts which will be hereinafter fully described and then specifically defined in the appended @claini. W

I illustrate my invention in the accompanying drawings, in which Figure l is a perspective view showing the 7 app ication of my appliance to theaxle and spring of a vehicle. Fig. 2 is a detail sectional view, and Fig. 3 is a detail view in elevation. a portion bein shown in section. Reference now being nad to the details of the drawings by letter, A designates the body of a vehicle and B a side bar. D desigmates one of the leafsprings upon a vehicle (connected to said bar.

Bearing plates. designated respectively by letters E and F, are clamped over the axle. laterally projecting wings of said bearing plates are provided with registering aper tures for the reception of the rods H, the lower ends of which have fixed thereto sleeves I which surround the spring; I), one upon either side of the axle. Said bearing plates are held together by means of screws 1?) or any other suitable fastening means and ising from the plate E is a plunger stem K vhich passes through an opening K in the ottom of the cylinder J and about the aperures in the bottom of said cylinder through :hich the plunger stem passes is a. groove i in which anti-friction balls L are seated ud adapted to prevent the plunger stem Tom contact with the marginal edges of the opening or arierturcf Said cylinder J has an integral flange K which is apertured for the reception of the upper ends of the bolts H which are fixed to said flange K and afiord means for supporting the cylin- Mounted within the cylinder are the tension springs-Q; fastened at their lower. ends to the bottom of the receptacle and their upper ends to the plunger head and the purpose of said coiled springs is to limit the inner movement of the plunger head within the cylinder. It, will be understood that the 'coiled spring Q, one end of which is fastened to the piston R and its other end to the movable end of the cylinder, serves as a tension spring, having a tendency to normally hold the cylinder in the position shown in Fig. 2 of the drawings, said spring being put under tension as the cylinder connected to the leaf spring moves downward- The top S of said cylinder preferably has threaded connection with the cylinder and has an adjustable valve S adapted to regulate the discharge of air from the cylinder.

Mounted within the cylinders and above the plunger head are the .rubber balls T, each of which has a filling tube T ence of the cylinder andafiording means whereby said ballsmay be inflated by any suitable air pump.

A check valve, designatedby letter R, is formed in the plunger head and serves to allow the air to enter thespace above the plunger head within thercylinder as the cylindermoves upward after having been depressed against the tension of the rubber balls within the cylinderl By the provision of the apparatus as shown and. described, it will be noted that a simple and efiicient means is afforded whereby vibration incident to the movement of a vehicle when in motion may be absorbed, dispensing with the use of the pneumatic and cushion tires.

What I claim to be new is A vehicle attachment for taking up vibrations comprising, in combination with the axle and leaf spring of av running gear, winged clamping plates fastened to the axle, a piston having a stem fixed to one of said plates, a cylinder in which said piston is extendiiig through an aperture in the circumfermoxinted, collars fitted about the leaf spring, rods projecting therefrom and movable through registering apertures in said clamping plates, an integral flange upon said cylinder fastened at its upper ends to said rods, cushion balls mounted within the cylinder intermediate the top of the latter and said piston, and a tension spring fastened at one end to the under side of said piston and its other end to the bottom of the cylinder.

In testimony whereof I hereunto atfix my signature in the presence of two Witnesses.

CHARLES G. POLLEYS. Witnesses:

A. L. HOUGH, FRANKLIN H. Houon. 

